In July, 2015 glyphosate-resistant kochia (Kochia scoparia) was identified in a field in Washakie County. It is highly likely that additional glyphosate-resistant populations will soon be confirmed in the region. Glyphosate is the active ingredient in Roundup® and many other herbicides. Resistance develops when herbicides with the same mode of action (MOA) are used repeatedly.

Decisive and coordinated action on the part of farmers, homeowners, municipalities, counties, rights-of-way managers, and weed and pest districts is necessary to prevent further spread.

If glyphosate-resistance in suspected, prevent seed and pollen spread by any means necessary. Zero-tolerance for suspected resistant kochia populations is the goal.